Construction of shuttles and shuttle-boxes in overpick weft-replenishing looms.



J. WHITTAKBR, J. BRIGGS & R. BRADSHAW. CONSTRUCTION OF SHUTTLES AND SHUTTLE BOXES IN OVERPIGK WEFT REPLENISHING LOOMS. APPLICATION FILED 00124.1913.

Patented Mar. 23, 1915.

UNITED STATES PATENT OFFICE.

JOHN WHITTAKER, JOSEPH BRIGGS, AND RICHARD BRADSHAW, OF RISHTON, NEAR BLACKBURN, ENGLAND.

CONSTRUCTION OF SHUTTLES AND SHUTTLE-BOXES IN OVER-PICK WEFT-REPLENISHING LOOMS.

Specification of Letters Patent.

Patented Mar. 23, 1915.

Original application filed June 27, 1911, Serial No. 635,624. Divided and this application filed October 24, 1913. SeriaI No. 797,066.

T 0 (ZZZ whom it may concern Be it known that we, JOHN WVHITTAKER, JOSEPH Barons, and RICHARD BRADSHAW, subjects of the King of the United Kingdom of Great Britain and Ireland, and residing at Wellington Mill, Rishton, near Blackburn, in the county of Lancaster, England, have invented new and useful Improvements in the Construction of Shuttles and Shuttle-Boxes in Overpick Weft-Replenishing Looms, of which the following is a specification. I

In fitting weft-replenishing mechanism to ove'rpick looms, especially to looms of the ordinary type, there is often great difficulty in so placing the cop magazine, the transferrer, and the means for guiding the cop into the shuttle that these are clear of the path of the picking mechanism.

Our invention has as its object to facilitate the fitting of weft-replenishing mechanism to overpick looms, firstly by modifying the usual form of shuttle in such a way that the cop magazine, the transferrer and the means for guiding the cop into the shuttle can be placed farther forward than they have to be with the usual form of shuttle, with the consequence that they can be more easily arranged to be clear of the picking mechanism; and secondly, by moving the loom spindle so that the path of the picking mechanism is farther back than is usual.

As an example of weft-replenishing mechanism in connection with which the shuttles and shuttle boxes acco ding to the present invention are especially applicable, such weft-replenishing mechanism may be of the construction fully described and claimed in our application for Letters Patent Serial Number 635624, filed June 27th 1911, from which the present application has been divided.

In the annexed drawings, Figure 1 is a cross section of our modified form of shuttle in the shuttle-box of an ordinary type of loom, and a cross section of the loom spindle in the position in which we prefer to fix it. Fig. 2 shows the corresponding parts as usually constructed.

The shuttle 1 is in place in the shuttlebox 2, and contains a cop 3: 4 is the loom s indle and 5 a Dicker. The shuttle 1 in Fig. 1 is constructed with the slot in which the cop lies, closer to the front edge of'the shuttle than to the back edge, the front ed e being made as thin as is compatible with the requisite strength. The back edge is made correspondingly thicker so as to keep the breadth of the shuttle the same. The loom spindle 4 in Fig. 1 is placed as close to the back of the slay 6 as will leave sulficient room for the ordinary picking mechanism, and is preferably raised above its ordinary position.

The curved dotted lines in Figs. 1 and 2 indicate the arcual path by which the cop 3 can be introduced into the shuttle 1, when the parts are constructed respectively, in accordance with our invention and as ordinarily. The arcual path is arranged in both cases so that the cop enters the shuttle directly downward or in a direction parallel to its sides. This direction of entry of the cop is of great importance because it enables the cop to be pressed into the shuttle with the minimum amount of force. On comparing the two figures it will be seen that, when the parts are constructed according to our invention, the path is much less curved and the center of the path (where it is preferable to fix the axis of the transferrer) is not so close to the shuttle as when the parts are as usually constructed. These differences are of great importance in facilitating the adaptation of the transferring mechanism. It will also be seen that at the levels where the cop magazine and the jaws or other means for guiding the cop during transfer are situated, the picker is farther back relatively to the cop in Fig. 1 than in Fig. 2 with the consequence that, with the construction shown in Fig. 1 there is more space available for these parts and they can be brought closer to the shuttle.

By means of our invention the above mentioned advantages are gained without serious or costly alteration of any part of the ordinary type of loom.

Having described our invention, we declare that what we claim and desire to secure by Letters Patent is 1. In weft-replenishing mechanism for looms, the combination with a slay and a.

shuttle-race thereon, of a shuttle having a thickened rear wall, a cop in the shuttle occupying a position therein nearer to the front than to the rear, and a loom picker spindle occupying a position directly above the shuttle when in the box and approximately midway between the center of the cop and the back edge of the shuttle in order to. admit of the use of a transferrer of "greater radius.

2. In weft-replenishing mechanism for looms, the combination with the slay and a shuttle-race thereon, of a shuttle having a thicknened rear Wall, a cop in the shuttle occupying a position therein nearer to the front than to the rear, and a loom picker spindle-occunving a position directly above the rear half of the shuttle when in the box and approxiinateiv midwav between the center of the cop and the back edge of the shuttle in order to admit of the use of a trans ferrer of greater radius.

' In witness whereof we, the said JOHN WHITTAKER and JOSEPH BRIGGS, have hereunto set our hands in the presence of two 20 witnesses.

JOHN VVHITTAKER. JOSEPH BRIGGS. Witnesses:

JOHN HAYHURST, FRANCIS GILLETT. In witness whereof I, the said RICHARD BRAnsHAw, have hereunto set my hand in the presence of two Witnesses.

RICHARD BRADSHAW.

Witnesses:

WARWICK HENRY WILLIAMS, FRANCIS ALBERT CLEMO.

Copies of this gatent may be obtained for five cents each, by addressing the Commissioner 0! Patents, Washington, D. C. 

